Date | Country | Change |
| 1818.09.22 |  Slovakia | Diocese of Prešov (Slovak Rite) was established (from Diocese of Mukačeve) |
| 1980.10.13 |  Canada | Diocese of Saints Cyril and Methodius of Toronto (Slovak Rite) was established |
| 1997.01.27 | Slovakia | Apostolic Exarchate of Košice (Slovak Rite) was established (from Diocese of Prešov) |
| 2008.01.30 | Slovakia | Diocese of Bratislava (Slovak Rite) was established (from Diocese of Prešov and became suffragan of Prešov) |
| 2008.01.30 | Slovakia | Apostolic Exarchate of Košice (Slovak Rite) was promoted as Diocese of Košice (became suffragan of Prešov) |
| 2008.01.30 | Slovakia | Diocese of Prešov (Slovak Rite) was promoted as Metropolitanate sui juris of Prešov (with suffragan sees Bratislava and Košice and lost territory to establish Diocese of Bratislava) |
| 2022.03.03 | Canada | Diocese of Saints Cyril and Methodius of Toronto (Slovak Rite) was suppressed (to establish Apostolic Exarchate of Saints Cyril and Methodius of Toronto) |
